In the past few years, an exciting new class of materials, the 2D magnetic materials, has been discovered.[1]}, [2]} These materials are attracting enormous attention due to their peculiar spin-related phenomena and vast potential for magneto-optics, magneto-electronics, and spintronic devices.[3]}, [4]}, [5]}
This new class of materials belongs to the fast growing family of 2D van der Waals (vdW) materials,
whose heterostructures hold great promises for nanoscale devices.
Many of the 2D magnetic materials are semiconductors with centrosymmetric atomic geometries, e.g., CrI\(_{3}\) , CrBr\(_{3}\) , CrCl\(_3\) , Cr\(_{2}\) Ge\(_{2}\) Te\(_{6}\) , and show ferromagnetism or layer-dependent ferromagnetism.[1]}, [2]}, [8]}, [9]} Importantly, the magnetism in such ultrathin magnetic materials can be tailored by external perturbations such as electric field,[10]}, [11]} pressure,[12]}, [13]} doping,[14]}, [15]}, [16]} and stacking engineering.[8]}, [12]}, [13]}
